With the help of np.chebval2d() method, we can get the array of coefficients after evaluation on (x, y) on chebyshev series by using np.chebval2d() method.
Syntax :
np.chebval2d(x, y, c)
Return : Return an array after evaluation on (x, y).
Example #1 :
In this example we can see that by using np.chebval2d() method, we are able to get the array of coefficients by evaluating (x, y) on chebyshev series.
# import numpy import numpy as np import numpy.polynomial.chebyshev as cheb   # using np.chebval2d() method gfg = cheb.chebval2d((2, 5), (1, 3), (2, -4, 1))   print(gfg) |
Output :
[32. 94.]
Example #2 :
# import numpy import numpy as np import numpy.polynomial.chebyshev as cheb   # using np.chebval2d() method gfg = cheb.chebval2d((1, 3, 5, 7), (2, 4, 8), (2, -4, 1, 5, 1))   print(gfg) |
Output :
[719680. 6486180. 52831708.]
